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Finding the Fourth Proportional to 220,700.48, 331,052.64 and 54,489.92

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Solution

The fourth proportional to 220,700.48, 331,052.64 and 54,489.92 is: 81,735.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,700.48 : 331,052.64 = 54,489.92 : x
  2. Step 2: Convert to fraction form
    220,700.48/331,052.64 = 54,489.92/x
  3. Step 3: Cross multiply
    220,700.48x = 331,052.64 × 54,489.92
  4. Step 4: Simplify right side
    220,700.48x = 18,039,031,869.39
  5. Step 5: Solve for x
    x = 18,039,031,869.39/220,700.48
  6. Step 6: Final answer
    x = 81,735.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.